Function configSetCommand

app/redis-6.2.6/src/config.c:713–2624

#define config_set_else } else

void configSetCommand(client *c) {
    robj *o;
    long long ll;
    int err;
    const char *errstr = NULL;
    serverAssertWithInfo(c,c->argv[2],sdsEncodedObject(c->argv[2]));
    serverAssertWithInfo(c,c->argv[3],sdsEncodedObject(c->argv[3]));
    o = c->argv[3];

    /* Iterate the configs that are standard */
    for (standardConfig *config = configs; config->name != NULL; config++) {
        if (!(config->flags & IMMUTABLE_CONFIG) && 
            (!strcasecmp(c->argv[2]->ptr,config->name) ||
            (config->alias && !strcasecmp(c->argv[2]->ptr,config->alias))))
        {
            if (config->flags & SENSITIVE_CONFIG) {
                redactClientCommandArgument(c,3);
            }
            if (!config->interface.set(config->data,o->ptr,1,&errstr)) {
                goto badfmt;
            }
            addReply(c,shared.ok);
            return;
        }
    }

    if (0) { /* this starts the config_set macros else-if chain. */

    /* Special fields that can't be handled with general macros. */
    config_set_special_field("bind") {
        int vlen;
        sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);

        if (vlen < 1 || vlen > CONFIG_BINDADDR_MAX) {
            addReplyError(c, "Too many bind addresses specified.");
            sdsfreesplitres(v, vlen);
            return;
        }

        if (changeBindAddr(v, vlen) == C_ERR) {
            addReplyError(c, "Failed to bind to specified addresses.");
            sdsfreesplitres(v, vlen);
            return;
        }
        sdsfreesplitres(v, vlen);
    } config_set_special_field("save") {
        int vlen, j;
        sds *v = sdssplitlen(o->ptr,sdslen(o->ptr)," ",1,&vlen);

        /* Perform sanity check before setting the new config:
         * - Even number of args
         * - Seconds >= 1, changes >= 0 */
        if (vlen & 1) {
            sdsfreesplitres(v,vlen);
            goto badfmt;
        }
        for (j = 0; j < vlen; j++) {
            char *eptr;